A railroad crossing sign is a circle with a diameter of 30 in. The manufacturer makes 6 railroad crossing signs from the sheet of aluminum by arranging the signs as shown. About ____ in2 of aluminum is left over after the signs have been made. (Enter only the number rounded to the nearest square inch.)

Question

anonymous · Answer

attachment

anonymous · Answer

area of the rectangle - 6 * area circle

campbell_st · Answer

the rectangle has length of 3 diameters and width of 2 diameters... 

find the area of the rectangle and subtract the area of 6 circles

anonymous · Answer

1159